EP3314310B1 - Vorrichtung und verfahren zur erfassung eines gegenstandes - Google Patents
Vorrichtung und verfahren zur erfassung eines gegenstandes Download PDFInfo
- Publication number
- EP3314310B1 EP3314310B1 EP16729593.0A EP16729593A EP3314310B1 EP 3314310 B1 EP3314310 B1 EP 3314310B1 EP 16729593 A EP16729593 A EP 16729593A EP 3314310 B1 EP3314310 B1 EP 3314310B1
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- coil
- transmitting
- receiving
- coils
- receiving coil
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- 238000005259 measurement Methods 0.000 claims description 23
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- 238000011156 evaluation Methods 0.000 description 4
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Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/104—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils
- G01V3/108—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils using several coupled or uncoupled coils the emitter and the receiver coils or loops being uncoupled by positioning them perpendicularly to each other
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
- G01V3/101—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil
- G01V3/102—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils by measuring the impedance of the search coil; by measuring features of a resonant circuit comprising the search coil by measuring amplitude
Definitions
- the invention relates to a device and a method for detecting an object arranged behind an object permeable to electromagnetic radiation, having the features according to the preamble of claims 1 and 7, respectively.
- inductive sensors are used to find a metallic, electrically conductive object in a surrounding medium, for example from the US-A 5,729,143 known.
- Sensors that detect the presence or movement of a non-metallic object through a flat object, for example through a plate that is not transparent to optical radiation are usually constructed according to the principle of capacitance measurement.
- a known application is, for example, capacitive touchpads, such as from the DE 103 24 579 A1 known, or capacitive proximity sensors such as in the DE 101 31 243 C1 described, in which a sensor with sensor electrodes and an associated control circuit for evaluating the sensor signals are provided, with a further electrode surrounding the sensor electrode.
- the sensor unit is firmly connected to the plate to be penetrated and, viewed from the sensor unit, the object to be detected moves behind this plate. Due to the mechanical arrangement, the sensor and the plate have a fixed capacitance to each other, which is reflected in the measured value as a constant basic capacitance.
- Bar finder stud detector
- Bar finders are general auxiliary devices for do-it-yourselfers and professionals, for example to detect bars, posts or pipes or power lines in prefabricated houses behind closed wooden cladding or planking. To do this, the sensor is guided over the wall. It measures the capacitance to the wall using an electrode. If there is a wooden beam, pipe or power line in the detection area, the change in the dielectric increases the capacity. This is evaluated accordingly and displayed to the user.
- the capacitance between the sensor and the flat object or the plate does not change. As in the first two examples, it is only included in the measurement signal as a constant value.
- the bar finder is also chosen as an exemplary embodiment.
- the one on which the preamble of the independent claims is based DE 10 2011 077 068 A1 relates to a device and a method for detecting an electrically and / or magnetically conductive object in the vicinity of a sensor head, in particular based on a pulse induction measurement principle.
- the US 2009/0219027 A1 describes a multi-sensor for detecting and identifying duds.
- the multisensor has at least two transmission coils arranged orthogonally to one another and a multiplicity of receiver coils arranged orthogonally to these.
- the receiver coils are arranged in two planes which are spaced apart from one another and run orthogonally to the transmitter coils, the transmitter coils being arranged between the receiver coils. This already results in a space-encompassing structure.
- the coils are arranged in such a way that the coil surfaces intersect or partially lie one inside the other
- the US 2010/0219823 A1 shows an operating method for a coil arrangement for a magnetic sensor for the detection of metallic objects in an underground medium such as behind or in a wall.
- the arrangement has two outer main coils, within which pairs of coils are arranged symmetrically to the axis of the main coils. Two pairs of coils orthogonal to this are provided opposite one another, likewise symmetrically to the axis of the main coils. Many of the transmitter coils are arranged axially parallel in one plane.
- a coil arrangement in particular for a metal detector, consisting of a transmitter coil and a receiver coil arranged orthogonally to the transmitter coil is known.
- the special feature of this orthogonal arrangement is that the two coils can be positioned relative to one another in such a way that no voltage induced by the transmitter coil operated with an electronic signal can be measured on the receiving coil without external influences.
- a metallic, electrically conductive object in the detection range of the The sensor bends the field lines of the emitted electromagnetic field penetrating the receiving coil, so that an induced voltage can be measured at the receiving coil. This voltage is referred to below as the measurement signal.
- a steel reinforcement grid cast in concrete is measured in this way with an inductive sensor
- eddy currents that arise in a metallic, electrically conductive object as a result of the electromagnetic field emitted by the inductive sensor can impair the measurement to the effect that, for example, a minimum of the The measurement signal is generated over a steel reinforcement segment of the grid, and a maximum of the measurement signal is generated above the voids in the center of the grid. Ring currents along the lattice structure, which act like electrical loops, are responsible for this effect.
- the DE 37 33 529 A1 shows an inductive metal detector with at least four excitation coils and at least one receiver coil.
- the four excitation coils are controlled in a periodic sequence with different currents in such a way that a resulting magnetic field changes its direction with an essentially constant amplitude changes largely continuously with a repetition frequency corresponding to the sequence mentioned.
- the excitation coils are arranged either in a plane spanned by the circular path or in each case orthogonally to the plane.
- From the DE 10 2010 007 620 A1 is a proximity sensor with a first transmitter coil, a second transmitter coil, at least one receiver coil, an excitation device, which is connected to the first and the second transmitter coil, and an evaluation device, which has at least one transmitter coil and / or the excitation device and the at least one receiver coil connected is known.
- the EP 1 092 988 A1 discloses an inductive sensor arrangement for detecting metallic objects hidden by a surrounding medium.
- the sensor arrangement has two adjacent transmission coils arranged at a defined distance from one another and in one plane and a pair of reception coils, which are each arranged in a respective field of the transmission coils in such a way that in these in an environment that is free of ferrous objects, none Voltage is induced.
- the DE 10 2009 010 943 A1 relates to an operating method and a coil arrangement for a magnetic sensor for the detection of metallic objects in an underground medium with a first main coil, at least two coils of a first coil group arranged in an interior of an extended winding cylinder of the first main coil and at least two coils of a first coil group arranged in the interior of the extended winding cylinder of the first main coil Coils of a second coil group which have a different orientation than the coils of the first coil group.
- the present invention is based on the object of providing a device and a method which reduce or even eliminate the lattice effect.
- the transmitter coils and receiver coils are arranged orthogonally to one another and operated alternately in different configurations so that by offsetting the amplitude curves it can be determined whether there is a grid segment or a cavity within the grid structure under the coil arrangement.
- the special arrangement and special wiring of the transmitter and receiver coils result in advantages for the precise determination of the position of metallic, electrically conductive objects.
- the coil arrangement described here prevents the occurrence of the grid effect, so that both the position of individual metallic, electrically conductive objects and grid-like structures consisting of metallic, electrically conductive segments can be precisely determined.
- a symmetrical measurement signal along a travel path of the sensor can preferably be determined by using two opposing configurations of the coils, which are present in the coil arrangement comprising a plurality of transmitting and receiving coils, and adding the signal amplitudes determined in the respective configurations. If further configurations are advantageously used which are arranged transversely to the first two configurations, an evaluation can also be carried out transversely to the travel path and thus two-dimensionally take place. By multiplexing several configurations over time, several measurement signals can be recorded and processed with just one evaluation unit.
- the figures show a device for detecting an object arranged behind a preferably flat object 12 which is transparent to electromagnetic radiation and which, in the exemplary embodiment, is a grid segment 9.1 of a reinforcement grid in a wall.
- the device is also suitable for basically detecting changes as a result of an object that influences the electromagnetic field that is caused by the transmission coils by the AC voltage transmission signal 5.1.
- objects can be hidden behind any objects or materials in the floor, ceiling or wall.
- the device has a coil arrangement consisting of at least a first transmission coil 1.1 and a second transmission coil 1.2 arranged orthogonally to the first transmission coil, as well as at least one first reception coil 2.1 arranged orthogonally to the first and second transmission coil and a second reception coil 2.3 arranged orthogonally to the first and second transmission coil.
- the coil arrangement thus forms a sensor for detecting the object in the event of relative movement between the device and the flat object 12.
- the at least one transmission coil 1.1, 1.2 is controlled via a control circuit and the output signals of the sensor are evaluated.
- the coils described in this application can be any coils, in particular coils printed on a conductor track.
- a spatial position of the coils with respect to one another is described below by means of imaginary coil planes and / or by means of imaginary axes of the coils.
- the geometric only serves to clarify the arrangement and does not have to be interpreted in an exact mathematical manner. Rather, as long as the described effect and measurement accuracy can be achieved, they can have a certain degree of fuzziness. In particular, if these are due to tolerances and / or by the in Fig. 6 described wiring can be compensated in a simple manner, in particular in the sense of a calibration and / or adjustment of the arrangement, in particular in the sense of an electronically achieved virtual spatial adjustment and / or alignment of the coils and / or their fields.
- a coil plane can be understood to mean an imaginary plane that is orthogonal to an average flux occurring in one eye and when the coil is in an energized state, the average flux in particular running through a center point of the eye.
- An axis of the coil can be understood to be a straight line running through the eye, through the mean flux and in the direction of the mean flux.
- the imaginary axis is therefore orthogonal to the respective imaginary coil plane.
- a direction of a field generated by a coil can be understood to mean the direction of the mean flux occurring in the eye.
- two directions opposite by 180 ° along the imaginary axis are conceivable.
- the imaginary axis and the imaginary coil plane run through a center point of a circle or circular cylinder delimited by the winding and making up the eye of the coil.
- a plane spanned by a surface on which the coil is printed can be understood below the coil plane, the eye of such a coil being assumed to be two-dimensional and also lying on the surface.
- the eye of the coil can be understood to mean an area enclosed by the winding or, in the case of a spatially extended coil, a body enclosed by the winding.
- the axes 1.5, 1.6 of the first and second transmitting coil 1.1, 1.2 are orthogonal to one another and ideally intersect the axis 2.5 of the first receiving coil 2.1 at a point, orthogonally.
- the axes 1.5, 1.6 of the transmitting coils are therefore in the plane in which the receiving coils 2.1, 2.2, 2.3, 2.4 are arranged.
- the distance between the second transmission coil 1.2 and the first reception coil 2.1 is the same as the distance between the first transmission coil 1.1 and the first reception coil 2.1. These distances are chosen to be as small as possible.
- the axes 1.5, 1.6 of the first and second transmitter coil 1.1, 1.2 are arranged orthogonally skewed to each other and intersect the axis 2.5 of the first receiver coil 2.1 in two points, each orthogonally.
- third transmission coil 1.3 and fourth transmission coil 1.4 run according to Fig. 3, 4 the axes 1.5, 1.7 of the first transmitter coil 1.1 and third transmitter coil 1.3 and the axes 1.6, 1.8 of the second transmitter coil 1.2 and fourth transmitter coil 1.4 each parallel to one another.
- 3 adjacent transmitter coils 1.1, 1.2, 1.3, 1.4 are orthogonal to each other and intersect the axes 2.5, 2.6, 2.7, 2.8, which are orthogonal to axes 1.5, 1.6, 1.7, 1.8 of the transmitter coils 1.1, 1.2, 1.3, 1.4, of the respective between two of the transmitter coils 1.1 , 1.2, 1.3, 1.4 arranged receiving coils 2.1, 2.2, 2.3, 2.4 ideally in one point, in particular in two points, if the axes 1.5, 1.6, 1.7, 1.8 of the respective transmitting coil 1.1, 1.2, 1.3, 1.4 are arranged skewed orthogonally to one another .
- the first transmitting coil 1.1 and the fourth transmitting coil 1.4 are adjacent to one another and enclose the fourth receiving coil 2.4 between them.
- the first transmitter coil 1.1 and the fourth transmitter coil 1.4, or their axes 1.5 and 1.8, are thus orthogonal to one another and intersect the axis 2.8, which is orthogonal to the axes 1.5, 1.6, 1.7, 1.8 of the transmitter coils 1.1, 1.2, 1.3, 1.4, of the axis 2.8 between these transmitter coils 1.1 and 1.4 arranged Reception coil 2.4 ideally in one point.
- the axes 1.5, 1.6, 1.7, 1.8 of the transmitting coils 1.1, 1.2, 1.3, 1.4 lie in the plane in which the receiving coils 2.1, 2.2, 2.3, 2.4 are arranged.
- the distances, in particular within the configurations of the coil arrangement explained below, between the cooperating transmission coils and the associated receiving coils are equally large and are selected to be as small as possible.
- the receiving coils 2.1, 2.2, 2.3, 2.4 are in the XY plane. If the first transmission coil 1.1 lies in the XZ plane, for example, the second transmission coil 1.2 lies in the YZ plane.
- the origin of this Cartesian coordinate system can be understood as the center point of the coil arrangement or define it.
- the grating structure to be detected is preferably parallel to the XY plane of the imaginary coordinate system or to the plane spanned by the receiving coils 2.1, 2.2, 2.3, 2.4.
- the receiving coils 2.1, 2.2, 2.3, 2.4 of the coil arrangement can be positioned parallel to the lattice structure and shifted accordingly parallel to it.
- the coil arrangement can be controlled as follows in order to achieve said advantages:
- the first and the second transmitter coil are according to Fig. 5 operated with an AC signal 5.1, 5.2 so that the emitted electromagnetic fields of the transmitter coils 1.1, 1.2 during half a period of the periodic alternating voltage transmission signal 5.1, 5.2 are both directed in the direction of the first receiving coil 2.1, or during the other half of the period periodic alternating voltage transmission signal are both directed away from the first receiving coil 2.1.
- Due to the orthogonal arrangement of the transmission coils 1.1, 1.2, the transmission signals are also orthogonal to one another and run in the direction of the corresponding axis and thus in particular in the direction of the plane of the reception coil (s) 2.1, 2.2, 2.3, 2.4.
- the first receiving coil 2.1 can be operated in series with the second receiving coil 2.3.
- the receiving coils 2.1, 2.3 are connected to one another in such a way that a preferably homogeneous electromagnetic field which penetrates the structure generates voltages directed opposite one another in the two receiving coils 2.1, 2.3.
- a resonance capacitance 3.1 can be connected in parallel with the pair of receiving coils 2.1, 2.3.
- Voltages induced in the receiving coils are amplified and measured by means of a suitable amplifier circuit.
- the measured signal without the presence of a metallic, conductive object is a "zero signal" without AC components.
- Tolerances, in particular manufacturing-related tolerances of the coil arrangement and / or minor deviations in the geometric arrangement of the coils to one another, can be compensated for with the aid of an AC voltage compensation signal 6.1 with a defined phase and defined amplitude, which is sent to the resonant circuit via a compensation impedance 7.1.
- FIG. 1 shows the top view
- Fig. 2 shows the side view of a simple construction of the coil arrangement
- FIGS. 5 and 6 show the associated electrical Wiring of the coils.
- This arrangement of the components with the circuitry shown forms a first configuration that enables the detection of grid segments with a one-dimensional travel path x in accordance with Fig. 7 enables.
- the signal shows a certain asymmetry depending on the geometry of the coil system.
- a second configuration according to FIG Fig. 3, 4 enables.
- the third and fourth transmission coils 1.3, 1.4 are operated with the alternating voltage transmission signal 5.1.
- the first and second receiving coils 2.1, 2.3 are still used as receivers.
- the amplitude curves of the first and second configuration 8.1, 8.2, which arise along the travel path x of the sensor parallel to a grid structure, are shown in FIG Fig. 8 shown.
- a symmetrical measurement signal 8.3 is produced by adding the first and second amplitude curves 8.1, 8.2.
- a third and fourth receiving coil 2.2, 2.4 enables two further configurations.
- the second and third transmission coils 1.2, 1.3 in a fourth configuration, the first and fourth transmission coils 1.1, 1.4 can serve as transmitters, while the third and fourth reception coils 2.2, 2.4 each serve as receivers.
- Fig. 3 shows a plan view of such a coil arrangement
- Fig. 4 shows a side view of such a coil arrangement with four transmitting coils 1.1, 1.2, 1.3, 1.4 and four receiving coils 2.1, 2.2, 2.3, 2.4.
- the axes 1.5 and 1.6 of the first transmitter coil 1.1 and the second transmitter coil 1.2 are arranged orthogonally to one another and intersect the axis 2.5 of the first receiver coil 2.1, in particular orthogonally, in particular ideally each orthogonally and at one point, as in the exemplary embodiments the Fig. 1 and Fig. 3 shown.
- the first configuration has, for example, the second receiving coil 2.3 as a further receiving coil.
- the axes 1.7 and 1.8 of the third transmitter coil 1.3 and the fourth transmitter coil 1.4 are arranged orthogonally to one another and intersect the axis 2.7 of the second receiver coil 2.3, in particular orthogonally, in particular ideally each orthogonally and at one point, as in the embodiment of FIG Fig. 3 shown.
- the second configuration has, for example, the first receiving coil 2.1 as a further receiving coil.
- the axes 1.6 and 1.7 of the second transmitter coil 1.2 and the third transmitter coil 1.3 are arranged orthogonally to one another and intersect the axis 2.6 of the third receiver coil 2.2, in particular orthogonally, in particular ideally each orthogonally and at one point, as in the exemplary embodiment in FIG Fig. 3 shown.
- the third configuration has, for example, the fourth receiving coil 2.4 as a further receiving coil.
- the axes 1.8 and 1.5 of the fourth transmitter coil 1.4 and the first transmitter coil 1.1 are arranged orthogonally to one another and intersect the axis 2.8 of the fourth receiver coil 2.4, in particular orthogonally, in particular ideally each orthogonally and at one point, as in the exemplary embodiment in FIG Fig. 3 shown.
- the fourth configuration has, for example, the third receiving coil 2.2 as a further receiving coil.
- This structure allows the grid segments to be measured when the sensor is moved two-dimensionally parallel to a grid structure.
- Fig. 10 shows a section of a grid with two closed electrically conductive segments through which electromagnetic fields flow in the opposite direction. Due to the different directions of the electromagnetic fields, ring currents with different directions of rotation form. Voltages of different polarity are induced in two receiving coils, which are spatially separated in the different electromagnetic fields.
- the in Fig. 6 The coupling of the receiving coils shown is the absolute sum of the signal amplitudes obtained from two opposite configurations when the center of the coil arrangement is exactly below a grid segment 9.1 that separates two closed circles from each other. If the grid segment has a noteworthy two-dimensional and / or spatial extent, the term exactly can be understood to mean that the center point lies centrally below the grid segment 9.1 and / or the Z-axis of the imaginary Cartesian coordinate system of the coil arrangement intersects the grid segment 9.1 in the middle.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Electromagnetism (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015211551.8A DE102015211551A1 (de) | 2015-06-23 | 2015-06-23 | Vorrichtung und Verfahren zur Erfassung eines Gegenstandes |
PCT/EP2016/064013 WO2016207073A1 (de) | 2015-06-23 | 2016-06-17 | Vorrichtung und verfahren zur erfassung eines gegenstandes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3314310A1 EP3314310A1 (de) | 2018-05-02 |
EP3314310B1 true EP3314310B1 (de) | 2021-11-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16729593.0A Active EP3314310B1 (de) | 2015-06-23 | 2016-06-17 | Vorrichtung und verfahren zur erfassung eines gegenstandes |
Country Status (7)
Country | Link |
---|---|
US (1) | US10712468B2 (ja) |
EP (1) | EP3314310B1 (ja) |
JP (1) | JP6807338B2 (ja) |
CN (1) | CN107787461A (ja) |
CA (1) | CA2992944C (ja) |
DE (1) | DE102015211551A1 (ja) |
WO (1) | WO2016207073A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019210301A1 (de) * | 2019-07-11 | 2021-01-14 | Dr. Johannes Heidenhain Gmbh | Sensoranordnung zum Erfassen einer Auslenkung einer Drahtelektrode |
US11781852B2 (en) * | 2020-11-24 | 2023-10-10 | Stoneage, Inc. | Fluid lance stop position sensor detection method and system |
Citations (2)
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US20090219027A1 (en) * | 2007-09-28 | 2009-09-03 | The Regents Of The University Of California | Multi-sensor system for the detection and characterization of unexploded ordnance |
DE102011077068A1 (de) * | 2011-06-07 | 2012-12-13 | Hilti Aktiengesellschaft | Verfahren und Vorrichtung zum Detektieren eines leitfähigen Objektes |
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US4628265A (en) * | 1983-04-22 | 1986-12-09 | Frl, Inc. | Metal detector and classifier with automatic compensation for soil magnetic minerals and sensor misalignment |
DE3733529A1 (de) * | 1987-10-03 | 1989-04-20 | Foerster Inst Dr Friedrich | Induktives metallteilesuchgeraet |
US5352974A (en) | 1992-08-14 | 1994-10-04 | Zircon Corporation | Stud sensor with digital averager and dual sensitivity |
US5729143A (en) | 1996-06-03 | 1998-03-17 | Zircon Corporation | Metal detector with nulling of imbalance |
EP1092988B1 (en) | 1999-10-13 | 2007-04-11 | HILTI Aktiengesellschaft | Inductive sensor arrangement and method for detecting ferrous objects |
DE10131243C1 (de) | 2001-06-28 | 2002-11-07 | Luer Luetkens | Kapazitiver Näherungsschalter |
DE10324579A1 (de) | 2003-05-30 | 2004-12-16 | Daimlerchrysler Ag | Bedienvorrichtung |
US6989662B2 (en) | 2004-04-29 | 2006-01-24 | Zircon Corporation | Sensor auto-recalibration |
DE202004011921U1 (de) | 2004-07-09 | 2004-10-07 | Ebinger, Klaus | Detektor, insbesondere Metallsuchgerät |
DE102010007620B9 (de) * | 2009-02-13 | 2013-01-24 | Sick Ag | Näherungssensor |
DE102009010943A1 (de) * | 2009-02-27 | 2010-09-16 | Hilti Aktiengesellschaft | Betriebsverfahren und Spulenanordnung für einen magnetischen Sensor zur Detektion metallischer Objekte in einem Untergrund |
US8450997B2 (en) * | 2009-04-28 | 2013-05-28 | Brown University | Electromagnetic position and orientation sensing system |
EP2841969A4 (en) * | 2012-06-29 | 2015-11-18 | Halliburton Energy Services Inc | MULTIAXIAL INTRODUCED BORING HOLE MAKING DEVICE |
DE102013212588B4 (de) * | 2013-06-28 | 2023-10-12 | Robert Bosch Gmbh | Verfahren zur Fremdobjekterkennung bei einer Induktionsladevorrichtung |
-
2015
- 2015-06-23 DE DE102015211551.8A patent/DE102015211551A1/de not_active Withdrawn
-
2016
- 2016-06-17 US US15/738,690 patent/US10712468B2/en active Active
- 2016-06-17 WO PCT/EP2016/064013 patent/WO2016207073A1/de active Application Filing
- 2016-06-17 JP JP2017566853A patent/JP6807338B2/ja active Active
- 2016-06-17 CN CN201680037032.6A patent/CN107787461A/zh active Pending
- 2016-06-17 CA CA2992944A patent/CA2992944C/en active Active
- 2016-06-17 EP EP16729593.0A patent/EP3314310B1/de active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20090219027A1 (en) * | 2007-09-28 | 2009-09-03 | The Regents Of The University Of California | Multi-sensor system for the detection and characterization of unexploded ordnance |
DE102011077068A1 (de) * | 2011-06-07 | 2012-12-13 | Hilti Aktiengesellschaft | Verfahren und Vorrichtung zum Detektieren eines leitfähigen Objektes |
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Publication number | Publication date |
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CN107787461A (zh) | 2018-03-09 |
CA2992944A1 (en) | 2016-12-29 |
JP2018524587A (ja) | 2018-08-30 |
JP6807338B2 (ja) | 2021-01-06 |
EP3314310A1 (de) | 2018-05-02 |
US20180180757A1 (en) | 2018-06-28 |
WO2016207073A1 (de) | 2016-12-29 |
DE102015211551A1 (de) | 2016-12-29 |
CA2992944C (en) | 2023-12-12 |
US10712468B2 (en) | 2020-07-14 |
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